Install, Wire & Troubleshoot FW Murphy W-Series Engine Panels

Generally, pressure and temperature Swichgage® contacts are wired to a central nerve center called a Magnetic Switch or Tattletale® annunciator. This nerve center is essentially a relay and, when signaled by a Swichgage® contact operation, it either makes or breaks a circuit to operate an alarm or engine shutdown device. Various nerve centers are used depending on the operation to be performed, the type of electrical power available and the type of alarm or shutdown device used.

Typical wiring diagrams for the popular Tattletale® annunciators and magnetic switches are linked to this page as pdf files for downloading. If a drawing of the specific model number is available, please refer to that drawing for specific wiring instructions.

The following Installation Instructions are typical for a variety of W-Series Engine Panels and may not reflect the exact configuration for your panel assembly. It is assumed that the installer is familiar with engine operations and has basic mechanical and electrical skills. If additional assistance is needed, please call Jay Ottaviano, inside technical sales representative, at MurCal.

Literature

Download bulletins and wiring diagrams for each type of W-Series panel:

This is a basic "Energize To Run Panel". It will keep power on from the "NC" terminal to your run circuit unless you have a safety condition on oil pressure or coolant temperature. Typically this panel will control the ignition coil, an inline fuel valve or a push/pull solenoid for shutdown. NOTE: This is an immediate shutdown device.

This is a basic "Energize To Run Panel". It will keep power on from the "NC" terminal to your run circuit unless you have a safety condition on oil pressure or coolant temperature. Typically this panel will control the ignition coil, an inline fuel valve or a push/pull solenoid for shutdown. NOTE: This is an immediate shutdown device, typically used on stand-alone engines.

This panel operates in the same manner as the mechanical WD300 described above, but uses electric gages and resistive senders. This allows for a greater distance from the engine to the panel as there are no pressure hoses or capillaries. The supplied electric gages are also illuminated.

This panel operates in the same manner as the mechanical WD100 described above. It also offers the option of adding a tachometer and a throttle cable as well as two other gages, such as irrigation pump pressure, engine oil temperature or transmission temperature. Voltage gages are also available as options. This panel also features a start/stop ignition key switch, an emergency stop push button and a 60-0-60 ammeter.

This panel operates in the same manner as the WDE300 described above, utilizing electric gages and resistive senders. This allows for a greater distance from the engine to the panel as there are no pressure hoses or capillaries. The supplied electric gages are also illuminated. The panel offers the option of adding a tachometer and a throttle cable as well as two other gages, such as irrigation pump pressure, engine oil temperature, an hourmeter or transmission temperature. Voltage gages are also available as options. This panel also features a start/stop ignition key switch, an emergency stop push button and a 60-0-60 ammeter.

This panel operates in the same manner as the mechanical W0168 described above. It also offers the option of adding a tachometer and a throttle cable as well as two other gages, such as irrigation pump pressure, engine oil temperature or transmission temperature. Voltage gages are also available as options. This panel also features a push button for start, an emergency stop push button and a 60-0-60 ammeter.

This is a standard Murphy panel that is perfectly suited for on and off road mobile applications. The WAI Panel Series can be wired for delay on both start and stop. These panels feature a flashing light and a mini-siren which sounds an alarm for 30 seconds before shutdown, giving the operator an opportunity to pull over. The mechanical Swichgage® instruments are internally illuminated for viewing at night and the panels are easy to mount under-dash with a 270° pivoting bracket.